"Proofs of a Conspiracy against all the Religions and Governments of Europe, carried on in the Secret Meetings of Free-Masons, Illuminati and Reading Societies, etc., collected from good authorities" is a book by John Robison alleging clandestine intrigue by the Illuminati and Freemasons. The secret agent monk, Alexander Horn provided much of the material for Robison's allegations. Robison goes through great detail about Adam Weisshaupt, founder of the Order of the Illuminati, and his infiltration of the Free Masons with a grand plan to overturn the social and political order of Europe and his successes.

John Robison (1739-1805) was a British physicist and mathematician. He was a professor of natural philosophy (the precursor of natural science) at the University of Edinburgh. Towards the end of his life, he became an enthusiastic conspiracy theorist and he became disenchanted with elements of the Enlightenment. He authored Proofs of a Conspiracy in 1797—a polemic accusing Freemasonry of being infiltrated by Weishaupt's Order of the Illuminati.